Kalen McKissock is a retired billionaire with an interest in art and theater. He associates with all the clans, and in fact he is the only vampire who seems to get along with Toreador and Malkavian without alienating himself from the Ventrue.

He seems to put on a different persona depending on who he's dealing with -- smiling and witty with the Toreador and Malkavians, serious and intense with the Ventrue, etc.